The Mount Wilson Observatory Legal Papers comprise one box of material relating to the founding, construction, and operation of the institution dating from 1903 to 1939. The bulk of the papers are legal documents: deeds, leases, utility contracts,...
The Mount Wilson Observatory Optical Shop Papers comprise 8 boxes of material relating to the operation of the department from 1911 to 1963 (bulk 1930-1947). This material is divided into four general categories: research and procedural notes,...
The papers consist of Francis Pease's research papers. It contains correspondence, manuscripts, Pease's notes (including his work notes, many of which contain various drawings and diagrams by him), reprints, photographs, etc. Topics covered in the...
The collection chiefly consists of the administrative, scientific, and personal correspondence of Walter S. Adams spanning the years 1921 to 1956, including his work during World War II. Adams and the observatory staff worked, in secret, with the...
The collection includes correspondence, manuscripts, printed material and ephemera all related to astronomer Francis Gladheim Pease, his astronomy work, and the telescopes he designed. There are 13 letters by George Ellery Hale as well as a copy of...
The collection contains material ranging from correspondence to various types of research materials to clippings and reprints of articles of newspapers, magazines, and academic journals. The majority of the collection deals with the history of...
The collection is composed primarily of correspondence between Dr. Pogo and members of the general public with an interest in astronomical issues and the work of the Mount Wilson Observatory. The Observatory was founded in 1904 by George Ellery...
Construction of the base of the observatory dome for the 60-inch telescope, Mount Wilson Observatory. Several unidentified construction workers are seen on and around the steel structural frame of the observatory building.
Construction of the 100-inch telescope observatory building, as seen from the 150-foot telescope tower, Mount Wilson Observatory. Photograph was taken with a 24' lens. The steel framing for the observatory dome is visible, with steel sheathing...
Construction of the observatory dome for the 100-inch telescope building, Mount Wilson Observatory. A portion of a crane can be seen extending through the observatory roof. Scaffolding surrounds the concrete foundation and dome framing. Trees and...
The 10-inch telescope dome, Mount Wilson Observatory. the domed roof is open to show the interior. A small window is in the base of the observatory building. In the background, to the far left, the Snow telescope building is visible. Trees and...
Geoffrey W. Marcy playing the cello in the 100-inch telescope observatory, Mount Wilson Observatory. Marcy is seated in a chair and is seen in the foreground of the photograph, with his violoncello in front of him. To Marcy's right is a large...
Kenwood Observatory, with dome open. Kenwood Observatory, in the Kenwood neighborhood of Chicago, Ill., was the personal observatory of George Ellery Hale.
Mount Wilson Observatory, as seen from the site of the 100-inch telescope. An observatory dome is visible on the left-hand side near the center of the photograph; an observatory tower is to the right, with trees in between the two structures. In...
Observatory dome for the 60- inch telescope, Mount Wilson Observatory. A woman is standing in front of the building, holding a book in her hands. A car is visible, under a tree, on the far left of the photograph. Trees are on either side of the...
Yerkes Observatory under construction, looking northeast. The brick work for the first and second floors is complete, and about half of the steel girders are in place for the great dome. The base for the great dome is on the left, and the base of...
Yerkes Observatory under construction, looking northeast. The brick work for the first and second floors is complete, and about half of the steel girders are in place for the great dome. The base for the great dome is on the left, and the base of...
Yerkes Observatory under construction, looking northeast. The brick work for the first and second floors is complete, and all of the steel girders are in place for the great dome. The base for the great dome is on the left, and the base of the...